Stepping stones to better coordination, balance, and fun. The Riverstones are inspired by stepping stones in a river with each side of the triangle varying in steepness and difficulty. The purpose is to jump from stone to stone without touching the floor - you canary the position of the stones to create more challenging paths for advanced children. Each stone has rubber studs on the base which prevent them from slipping, and also protect indoor floor areas. Builds children's confidence when jumping, judging distances, coordinating and balancing. Set of 6 river stones. *220lbs.